Controlled copolymerization of methyl acrylate with olefins under mild conditions
OwnerAyusman Sen, Sharon Elyashiv-Barad +1inventors
InventorsAyusman Sen, Sharon Elyashiv-Barad, Shengsheng Liu
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Abstract
A copper-mediated process for the synthesis of random copolymers of methyl acrylate with non-polarolefins, ranging from ethene to 1-octene, norbornene and norbornene derivatives, and capable of synthesizing copolymers having greater than 5% incorporation of the olefin, as well as copolymers synthesized using the process are described. The process displays many of the characteristics of a living polymerization process: the polydispersities of the copolymers obtained are less than about 1.7, preferably from about 1.1 to about 1.4, and it is possible to synthesize novel block terpolymers of methyl acrylate with olefins by the sequential addition of the latter monomers.
Claims22
A process for synthesizing a random copolymer of an acrylate monomer with at least one non-polar olefin monomer selected from the group consisting of ethene, linear or branched C3 to C10 olefins, norbornene and norbornene derivatives, which comprises contacting the acrylate monomer with the at least one olefin monomer in the presence of a copper-containing catalyst system with or without an inert diluent or solvent, and at temperature of from about 20 to about 150° C., to synthesize a random copolymer having a polydispersity (Mw/Mn) of less than about 1.7.
A process for synthesizing block copolymers of an acrylate monomer with at least two non-polar olefin monomers selected from the group consisting of ethene, linear or branched C3 to C10 olefins, norbornene and norbornene derivatives, which comprises contacting an acrylate monomer with a first non-polar olefin monomer in the presence in the a copper-containing catalyst system with or without an inert diluent or solvent, and at temperature of from about 20 to about 150° C., to synthesize a first random copolymer having a polydispersity (Mw/Mn) of less than about 1.7;
- and then contacting said first random copolymer with a second olefin monomer, which is different from said first olefin monomer, in the presence in the a copper-containing catalyst system with or without an inert diluent or solvent, and at temperature of from about 20 to about 150° C., to thereby synthesize a block copolymer having a polydispersity (Mw/Mn) of less than about 1.7.
A random copolymer of an acrylate monomer with at least one non-polar olefin monomer selected from the group consisting of ethene, linear or branched C3 to C10 olefins, norbornene and norbornene derivatives, said copolymer containing from about 5 to about 50 mol % olefin-derived units and having a polydispersity of less than about 1.7
A block copolymer comprising a block of a first random copolymer of an acrylate monomer with at least one non-polar olefin monomer selected from the group consisting of ethene, linear or branched C3 to C10 olefins, norbornene and norbornene derivatives, said first random copolymer containing from about 5 to about 50 mol % olefin-derived units and having a polydispersity of less than about 1.7, and a block of a second random copolymer of said first random copolymer with at least one non-polar olefin monomer selected from the group consisting of ethene, linear or branched C3 to C10 olefins, norbornene and norbornene derivatives, wherein said second random copolymer has a polydispersity of less than about 1.7.
Dependencies are inferred from the claim text.